inject() Function

Angular 14+ introduced the inject() function as an alternative to constructor-based injection. It works in components, directives, pipes, guards, and resolvers.

import { inject } from '@angular/core';

@Component({ ... })
export class UserComponent {
  private userService = inject(UserService);
  private route = inject(ActivatedRoute);

  // No constructor needed!
}

• Cleaner class definitions
• Works in functional guards
• Reduces boilerplate

The inject() function provides a cleaner, more flexible injection mechanism.”